Heater



July 29, 1941. R. L. MCCALL 2,250,893

HEATER Filed April 15, 1941 3 Sheets-Sheet 1 IN VENTOR.

BY Robert L. M20012 AT TOR NE JLLLU July 29, 1941. a. L. MCCALL 2,250,893

HEATER I Filed April 15, 1941 3 Sneets-Sheet 2 FIQZ F 1 .4 17 I 14 14 a H1 1' f lllii "W 7' INVENTOR. 16

Robert 1;. M Call ATTORNEY Patented July 29, 1941 UNETED STATES FATENT QFFiiCE HEATER Robert L..McCall, Winfield, Kans. Application April 15, 1941 Serial No. 388,669

4 Claims.

My invention relates to an improvement in heaters and has for its object to provide a heater in which two distinct channels for air flow are provided in the heater. One of these air channels is for the transmission by force of cold air which is emitted from the heater at a point adjacent the door of the space to be heated. The other of these air channels is for the transmission of air by force around and between heating drums from which the air is heated and then emitted from the heater in a stream of air parallel to and riding the cold stream of air also being emitted.

Another object is to provide a heater of the kind mentioned which has a cold air channel spaced above the floor of the space to be heated so as to permit .a free circulation of air between the bottom of the heater and the floor of the space to be heated. This arrangement provides the cold flow of air in the heater beneath the heated flow of air and above the air circulation beneath the bottom of the heater so as to avoid excess heating of the floor of the space to be heated beneath the heater.

A still further object is to provide a heater of the kind mentioned in which the air is forced to circulate under the influence of a fan around an unusually large heating surface.

A still further object is to provide a heater of the kind mentioned in which a gas or oil burners or other suitable heating means may be employed.

A still further object is to provide a heater of the kind mentioned that is simple in construction, inexpensive to make and highly efficient in its operation.

Now referring to the accompanying drawings, Fig. 1 is a front view of the heater.

Fig. 2 is a side view of the heater.

Fig. 3 is a rear view of the lower portion of the heater.

Fig. 4 is a sectional view through the heater, the View being taken through the line IVIV in Fig. 1.

Fig. 5 is a sectional view through the heater, the View being taken along the lines V-V in Figs. 2 and 4, and looking in the direction of the arrows.

Fig. 6 is a partial top and sectional View of the heater, the view being taken along the line VI-VI in Fig. 5.

Similar numerals of reference designate the same parts throughout the several figures of the drawings.

In the drawings is shown a housing having a front wall I0, side walls ll and I2 and a rear wall I3. The housing is provided with a cover I4 and a bottom l5, which is spaced above the floor it of the space that is to be heated.

Spaced above the bottom I5 is a sub floor 11 that lacks a little of reaching the rear wall 13 so as to leave an opening l8 between the rear edge of the sub floor l1 and the rear wall l3.-

Supported on the sub floor I1 is a heater housing l9, in which is sup-ported aseries of gas burners 20 that are supported on a frame 2| "under which is supported a gas manifold 22 from which gas is fed through jets 23 to thegas burners 2i). 1 At 24 is shown a Venturi section connectin'gwith the gas manifold 22 and at 25 is a gas control valve through which gas fuel is fed from the pipe 26 into the Venturi section 24 and manifold 22. g

The heating drum 1 9 is narrow enough to leave spaces 21 and 21a. between the heating drum I9 and the end walls H and 12 of the heater, there being division walls '28 and 29 at the rear vertical corners of the heating element, said par titlons 28 and 29 extending within a short distance of the top of the heating element l9, and thebottom end of the partition 28 joining the sub floor H as shown in Fig. 5.

The bottom end of the partition 29 joins the top of a duct 30, which reaches from the'bottom of the partition 29130 the sub floor I! and opens into the heating element I9, the duct 3!] being of sufficient size that the gas burners 2ilian'd supporting frame 2| and gas manifold 22 and Venturi element 24 may be entered therethrough for assembly purposes and for lighting the burn- At 3| is an ornamental grill over the duct 36 and having openings therein for the admission of air toand around the burners as'secondary air for fuelcombustion.

At 32 is a second heating element having ver-' tical divisions33 and 330. that are spaced away from the ends of the heating element 32"and extend from the top of the heating element toa point 34' that is well above the bottom of the heating element 32 so as to form three compartments A, B and C therein. The. compartments A and C joining the compartment B at the bot tom of the heating element 32 through an opening D as illustrated in Fig, 4.

At 35 and 36 are tube like elements opening from the top of the heating element I9 into the compartments A and C in the heating element At 31 is a vent or flue connecting opening from the top of the compartment B and leading through the rear wall I3 of the heater as shown in Figs. 2, 4 and 6.

At 38 is shown spacer elements between the heating elements 19 and 32 and at 39 is shown spacer elements between the heating element 33 and the rear wall l3.

The arrangement above described provides two heating elements l9 and 32, between which is an air passage F and also an air passage E between the rear wall I3 and the heater element 32 and another air passage G between the heater element l9 and the heater wall I0 and an air passage H occurs over the top of the heating elements I9 and 32 and joins with the air passages E, F and G.

Beneath the heating element 32 is an air passage I which joins the passages E and F. In the rear wall I3 is a circular shaped opening 40 bounded by an outwardly projecting flange 4| in which is positioned a fan 42 that is driven by a motor 43 that is mounted on a spider bracket 44 that is rigidly mounted on the rear wall 13 of the'heater.

The front wall III of the heater is provided with an opening having a baffle 45 and a louver 46 therein so positioned as to direct a flow of air downwardly and outwardly from the air passage G.

The opening in the front wall In is also large elements 35 and 36 into the top of the compartments A and C and travel downwardly therein and pass through the opening D at the bottom thereof, and then into the compartment B and travel upwardly therein to be exhausted through the vent 31. During the travel through all of these heating elements and compartments, practically all of the heat has been radiated through the walls of the heating elements l9 and 32 and into the air passages therearound. The electric motor 43 being in motion will drive the fan 42 F to bring in air through the opening 40 and discharge it into the inside of the heater housing, whereupon the air is forced to travel, some upwardly and some downwardly and some sideways through the passage E to the passages H and I and also upwardly through the passage F to join the passage H, thence downwardly through the passage G to be discharged in an outwardly and downwardly direction through the opening in the front wall ID by reason of the bafile 45 and louvre 46.

This stream of air, because of its contact with the heating elements l9 and 32 during its travel just described, is hot. Simultaneously with the flow of air just described, is a second flow of air, also impelled by the fan 42 and which is a part of the air coming through the passage l8 and cold air passage J to be discharged through the opening in the front wall l0 and beneath the stream of hot air being discharged immediately above. Therefore a stream of air is being emitted from the heater along the floor line [6, the bottom portion of said stream of air being of considerably lower temperature than the upper portion thereof, which results in a composite stream of air having a tendency to flow along the floor line l6 for considerable distances thereby accomplishing a more uniform heating of the room or space to be heated than is accomplished in other forced draft heaters.

Such modifications may be employed as lie within the scope of the appended claims without departing from the spirit and intention of the invention. Having fully described my invention, I claim:

1. In a heater of the character described the combination with an external casing, a radiator structure in said casing spaced from the walls of the casing at all points, partitions connecting the radiator with the opposite sides of the casing and dividing said easing into front and rear compartments, means for heating the interior of the radiator structurea cold air inlet in the rear wall of the casing at a point nearer the bottom than the top of the casing, an outlet for discharging heated air obliquely downward, said outlet being located in the front wall of the casing at a point relatively close tothe floor line, a substantially horizontal partition spanning the casing close to the bottom thereof and spaced from the bottom of the casing enough to provide a conduit for air across the lower portion of the casing, a fan for drawing air into the cold air inlet, means for establishing communication between the rear end of said conduit and the rear compartment at a point adjacent the fan whereby cold and relatively dense air may travel directly from said fan across the casing and be discharged in a substantially horizontal path across the floor line and beneath the stream of hot air being discharged from the heated air outlet, the said conduit opening through the front wall of the casing at a point below the outlet for heated air.

2. A structure as recited in claim 1 in combination with means for holding the bottom of the casing in spaced relation to the floor line, the horizontal cold air conduit protecting the floor from heat.

3. A structure as recited in claim 1 wherein the radiator structure comprises a pair of spaced vertical drums, and wherein the said first named partitions are so located that the one of said drums lies in the rear compartment and the other of said drums lies in the front compart ment.

4. A structure as recited in claim 1 wherein the radiator structure comprises a pair of spaced vertical drums, and wherein the said first named partitions are so located that the one of said drums lies in the rear compartment and the other of said drums lies in the front compartment with its rear wall exposed to the air in the rear compartment.

ROBERT L. McCALL. 

